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26-05-2020
Mathematics

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HELPP!!!
Two similar cones have matching heights and radii whose lengths are in the ratio 7:1 Find the ratio of their surface areas.

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Ultroid Ultroid

26-05-2020

In general, if corresponding lengths of two similar figures are in the ratio [tex]a:b,[/tex] then their areas are in the ratio [tex]a^2:b^2.[/tex] Thus, our answer is [tex]7^2:1^2=\boxed{49:1}.[/tex]

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